标题： FRB 20121102A 的光谱-时间特性广泛调查 显示英文标题

标题： A broad survey of spectro-temporal properties from FRB 20121102A

摘要： 我们综述了来自FRB 20121102A快速射电暴的光谱-时间特性，这些特性由早期的研究在广泛的频率范围内观测到。我们研究了来自FRB 20121102A的167个爆发，它们跨越了1至7.5GHz的频率范围，持续时间从不到1毫秒到大约10毫秒不等，并且具有低能量和高能量以及不同的等待时间。我们发现这一样本中的爆发强烈支持子爆斜率与持续时间之间的反比关系以及其他由触发相对论动力学模型（TRDM）做出的预测。早期的结果发现在三个不同的重复FRB源中与这些预测一致。对于这一样本中的爆发，我们发现子爆斜率以及“悲伤小号”漂移率与频率呈二次关系，并且这两个量都与持续时间成反比。我们还发现持续时间随着频率增加而减小，并且子爆持续时间和带宽（与$t^{-1/2}$成正比）之间存在统计上显著的相关性，这是意想不到的。在这个样本中没有发现任何一组爆发偏离这些关系，然而测量值中可以看到显著的散射现象。这项研究证明了来自重复FRB源的爆发的光谱-时间特性之间关系的一致存在。子爆斜率与持续时间之间反比关系的一个简单解释是固有的窄带发射过程。我们将所有测量数据公开，并提供了一个名为Frbgui的图形用户界面，该界面被开发和用于执行爆发瀑布图的测量。 显示英文摘要

摘要： We survey the spectro-temporal properties of fast radio bursts from FRB 20121102A observed by earlier studies across a wide range of frequencies. We investigate 167 bursts from FRB 20121102A spanning frequencies 1--7.5GHz, durations of less than 1 ms to approximately 10 ms, with low and high energies, and with different wait-times. We find from this sample of bursts a strong agreement with the inverse relationship between sub-burst slope and duration and with other predictions made by the triggered relativistic dynamical model (TRDM). Earlier results found agreement with those predictions across three different repeating FRB sources. For this sample of bursts, we find that the sub-burst slope as well as the 'sad trombone' drift rate are consistent with being in a quadratic relationship with frequency and that both these quantities are inversely proportional to the duration. We also find that the duration decreases with increasing frequency as well as a statistically significant correlation between the sub-burst duration and bandwidth (proportional to $t^{-1/2}$) that is unexpected. No distinct group of bursts in this sample deviated from these relationships, however significant scatter can be seen in measurements. This study demonstrates the consistent existence of relationships between the spectro-temporal properties of bursts from a repeating FRB source. A simple explanation for the inverse relation between the sub-burst slope and duration is an inherently narrowband emission process. We make all measurements available as well as a graphical user interface called Frbgui developed and used to perform measurements of burst waterfalls.